import numpy as np
a = np.array([
    [5,5,5.2],
    [3.3,666,333]
    ])
# print(a.ndim)
print(a.size)
# b = np.arange(6)
# print(b)

# cars = np.array([
# [5, 10, 12, 6],
# [5.1, 8.2, 11, 6.3],
# [4.4, 9.1, 10, 6.6]
# ])

# print("数据：\n", cars, "\n维度：", cars.ndim)
